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问题 填空题

四只完全相同的灯泡串联后直接接在某一电源两端而正常发光，用电压表测出一只灯两端电压为3.8V，则该电源电压约为 _________ ；如果将四只灯泡并联在该电源两端，则可能出现的现象是 _________ ．

答案

15.2V；灯泡将烧坏．

选择题

下面这段话中，关于文学作品内容理解不完全正确的一句是（3分）（   ）

A．杜甫的《茅屋为秋风所破歌》的“歌”是指能唱的诗，古代诗歌的一种体裁。

B．《陈涉世家》节选部分记叙了陈胜起义的原因、经过和浩大声势。

C．《曹刿论战》说明，政治上取信于民是弱国战胜强国的必要条件。

D．“孔乙己”是一个没有考取秀才的读书人，他因为迂腐，所以叫人讨厌。
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单项选择题

Many consumers are concerned about the ecological effects of wasteful packaging. This concern probably explains why stores have been quick to stock new cleaning products that have been produced in a concentrated form. The concentrated form is packaged in smaller containers that use less plastic and require less transportation space.
Which of the following, if true, most seriously undermines the explanation offered above

A．Few consumers believe that containers of concentrated cleaning products are merely small packages of regular cleaning products.

B．The containers in which concentrated cleaning products are packaged are no harder to recycle than those in which regular cleaning products are packaged.

C．Those concentrated cleaning products that are intended to be used diluted have clear instructions for dilution printed on their labels.

D．The smaller containers of concentrated cleaning products enable supermarkets and drugstores to increase their revenues from a given shelf space.

E．(E) Consumer pressure has led to the elimination of wasteful cardboard packaging that was used for compact discs.
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